Crown Tundra is still in development, Isle of Armour is almost complete
Isle has elite trainers from other regions
Isle has 5 new galarian forms families, but 1 evolution
2 from kanto 3 from hoenn, 1 evolution for kalos (a panda looks like elvis)
Gigantamax venasaur for sword, blastoise for shield, johto will get gigantamax forms
Tundra will have procedurally generated dungeons for legendary raids
the NPCs planned are a hiker, an archaeologist who uses ground type pokemon, and a reporter who uses electric type pokemon
they have planned 2 more updates for the expansion pass, no themes yet, likely for next year